Understanding what happens during a celiac disease diagnosis can help ease patient anxiety. The process typically involves a blood test followed by a biopsy if necessary. This article explains what to expect during each step.

Initial Blood Test for Celiac Disease

The first step in diagnosing celiac disease is a blood test. This test looks for specific antibodies that are usually elevated in people with the condition. Common antibodies tested include anti-tissue transglutaminase (tTG) and anti-endomysial antibodies (EMA).

Before the test, it’s important to continue eating a gluten-containing diet. If you have already started a gluten-free diet, the results may be inaccurate. The blood draw is quick and typically done in a medical clinic or lab.

What Happens During the Blood Test

A healthcare professional will insert a needle into a vein, usually in your arm, to collect a small blood sample. You might feel a quick pinch or sting. The entire process takes just a few minutes. Afterward, you can usually resume normal activities immediately.

Follow-Up: The Biopsy Procedure

If blood tests indicate celiac disease, a small intestinal biopsy is often recommended to confirm the diagnosis. This involves removing a tiny tissue sample from your small intestine using an endoscope.

Preparing for the Biopsy

Preparation includes fasting for several hours before the procedure. Your doctor will give specific instructions. It’s important to continue eating gluten until the biopsy to ensure accurate results.

During the Biopsy

The procedure is performed under sedation or local anesthesia. An endoscope—a flexible tube with a camera—is inserted through your mouth into your small intestine. The doctor then takes a small tissue sample.

Recovery and What to Expect

Recovery from the biopsy is usually quick. You might experience a sore throat or mild discomfort afterward. Your doctor will discuss the results, which typically take a few days to a week to process.

If diagnosed with celiac disease, your healthcare provider will recommend a strict gluten-free diet to manage the condition. Regular follow-up tests may be necessary to monitor your health.